How To Change A Bike Tube
Everyone who rides a bicycle should be able to change an inner tube, but most can't. This veteran bike mechanic with twelve years experience shows you how, step by step, quickly and easily.
Hello, my name is John from 'On Your Bike' in London. I have been a bike mechanic for twelve years. I am going to show you a few things about bikes, things like saddle height and setting it up so it's the correct size and a few maintenance tips as well.
Once you have purchased your new inner tube and you would need to refit it into your wheel, start off by fitting it in there like that. You get the valve and then you place that through the valve hole, like so, then you've got the basic shape there. If you haven't, say it's really flat and it's got no shape at all, just put a small bit of air into it about 2psi, something like that and it will give you the shape that you want.
That really just fits inside the wheel. You may find it easier if you lay it down on the floor so that way, it's not likely to fall away. This one fits on not too bad, if it's tight when it comes to the end, you may need to use tyre levers and they just fit underneath and hook onto the rim, they've got a little hook there but just make sure you don't pinch the inner tube, so make sure the inner tube's tucked well inside the tyre and also if you've got aluminium rims which most bikes have these days, use plastic levers, don't use metal ones because you will find they will score the rims, you can damage them.
Slowly, just squeeze it on and that locks into place and finally, what I recommend is just push the valve so it fits into the tyre properly and that's it and then just pump it up to the right pressure. Once you've got it to the correct pressure on this pump, it's got a gauge so it makes it quite easy. I'd always recommend using a pump with a gauge, makes it a lot easier, more reliable.
Another thing is to make sure it's the correct direction because they have a rotating direction on the tyre which is down to the cut pattern of the tyre, so if you fit it the wrong way, you will find it won't run smoothly and also, if it's raining or something like that, it might not grip as well. .